May 02, 2026 • Leetcode
Remove K Digits
Given string num representing a non-negative integer num, and an integer k, return the smallest possible integer after removing k digits from num.
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Apr 30, 2026 • Leetcode
Split Array into Consecutive Subsequences
You are given an integer array nums that is sorted in non-decreasing order.
Read more →Apr 29, 2026 • Leetcode
Open the Lock
You have a lock in front of you with 4 circular wheels. Each wheel has 10 slots:
Read more →Apr 28, 2026 • Leetcode
Design HashMap
Design a HashMap without using any built-in hash table libraries.
Read more →Apr 27, 2026 • Leetcode
Ransom Note
Given two strings ransomNote and magazine, return true if ransomNote can be constructed by using the letters from magazine and false otherwise.
Read more →Apr 26, 2026 • Leetcode
Matchsticks to Square
You are given an integer array matchsticks where matchsticks[i] is the length of the ith matchstick
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